Machine for punching records



4, 1953 c. E. CONNOLLY 2,647,580

MACHINE FOR PUNCHING' RECORDS Filed May 15, 1948 4 Sheets-Sheet l /6ATTORNE 1953 c. E. CONNOLLY MACHINE FOR PUNCHING RECORDS Filed May 13,1948 4 Sheets-Sheet 2 \NVENTOR 6/1191?! [6 f. CO/V/VOZZV IIIIIII .2

ATTORN EY 1953 c. E. CONNOLLY MACHINE FOR PUNCHING RECORDS Filed May 13,1948 4 Sheets-Sheet 3 3 3 2 3 2 3 1 2 3 O i 2 3 0 1 3 0 m 2 H .o 1 2 3 Q0 I 7. 3 0 4 2 3 O 1 2 3 O 1 3 M 0 I 2 3 2 3 0 I U 3 0 1 Z 3 0 n 2 3 o(I 2 a 0 l 2 u 0 Z 3 12545676910 l2 14 I618 20 Z2 Z4 Z6 26 5052 545658INVENTOR C/MAZFSZT (ON/V010 Aug. 4, 1953 c. E. CONNOLLY MACHINE FORPUNCHING RECORDS F iled May 15, 1948 4 Sheets-Sheet 4 ATTORNE PatentedAug. 4, 1953 MACHINE FOR PUNCI-IING RECORDS Charles E. Connolly,Endicott, N. Y., assignor to International Business MachinesCorporation, New York, N. Y., a corporation of New York Application May13, 1948, Serial No. 26,797

Claims. 1

The present invention pertains to punching mechanisms and moreparticularly to the type which punches records to represent statisticalinformation.

The primary object of the present invention, in the broadest sense, isto effect the transformation of one form of statistical representingdesignation to another form and as an incident to such transformationverify the correctness of the original designation.

The invention resides in not only the provision of means constructed andarranged to effect the concomitant transforming-verifying function butalso includes the process and method for carrying out these functions.

.As explanatory of the purpose of the present invention it is well knownthat one form of statistical representing record contains designationsmade by a perforating machine which completely cuts out th perforationsfrom the record stock and in so doing produces chads, or pieces of wastepaper. These chads are of the same configuration as the hole and arerectangular as in on form of card, circular as in another form of card,etc. The holes are completely cut out so that sensing elements ofanother machine controlled by the record may penetrate the hole andeifect a selective operation when the presence of a hole is sensed.These sensing elements may be pins, electrical contact brushes, etc.,all of which go completely through the hole to have the proper sensingfunction.

Due to the fact that the production of thousands and thousands of suchchads presents problems in their disposal and by their manufacture causethe possibility that these small pieces of card or paper stock may enterthe working parts of the machine, it has been the subject and object ofthe patent to R. A. Lake, No. 2,255,794, dated September 16, 1941, toproduce a semi-perforated or chadless form of record to solve. the aboveproblems. In this form the hole is semi-perforated so that the unoutpart forms a hinge-connection between the chad and the record stock.Other advantages which need not be enumerated here but which are fullydescribed in this patent also accrue from this type of record.

However, the semi-perforated or chadless form of record is not suitableto control existing forms of record controlled accounting, sorting andother forms of similar machines, and it is, therefore, the aim andobject of the present invention to transform the type Oi record havingchadless holes or semi-perforated holes to the type of record havingcompletely severed holes.

A feature of the present machine is the design of a checking or numeralor alphabet verifying punch which, in reality, is a punch because, uponverification of the designation of one form, a completely punched holeor holes are made.

A feature of the construction also pertains to the provision of aplurality of combination record sensing and punching pins, eachcombination of which is coordinated with the related index pointposition of a column of a record to be sensed, verified and punched.While a plurality of sets of such pins may be provided for simultaneousverification and punching of a plurality of columns of a record, it ispreferable to provide only one set and coordinate it with a ingle recordcolumn at a time. To this end the coordination of a single set of suchcombined sensing-punching pine is preferably effected by movement of therecord relative to the combined sensing-punching pins and isautomatically effected by the operation of the keys of a keyboard.

The punching-verifying machine is provided with keys similar to those ofa card punching machine or a typewriter keyboard and th operatoroperates the keys just as if a new card Were being punched. If there isa chadless hole or a plurality of holes representing data correspondingto the numeral or alphabet key depressed the sensing in or pins willpass through the perforation and then effect the operation of thepunching mechanism to sever the chad from the record at each indexposition that the chadless hole was sensed and thereby make a com pletehole at each of such index point positions. In this manner the mereoperation of the key verifies the correctness of the chadlessperforation or perforations and transforms each chadless hole to acompletely cutout hole.

A suitable error indicating device may also be rovided to indicate thelack of correspondence between thev key depressed and the chadless holeor holes in the column sensed. In the present machine when there is afailure in correspondence between the key depressed and the chadlesshole in the column sensed the depression of a key will not make a holeat an index position corresponding to the key punched and further, thecard will not space to the next column.

Thus, under such circumstances the failure to space th carriage carryingthe card to be veri- "fied will be quickly recognized by the operator.Thus, an error in either the original punching of the card or the keyoperation is indicated.

In the preferred embodiment there is arranged at each index pointposition a punch .pin which is adapted to punch a rectangular hole andcarries a sensing pin protruding below the punch and adapted to passthrough the chadless hole, if one is found when the related key isoperated. The punch keys shift the interp-osers in the usual way and ifthe associated sensing pin is over a chadless hole the shiftedinter-poser will cam it down through the hole to a position ready topunch the hole. As the sensing pin passes through the hole its relatedcomparing contacts are transferred. There is a comparing circuitcontrolled by contacts closed by each k y and the. contacts transferredby the associated sensing pin.

A comparing circuit or a plurality of comparing circuits are preferablyincomplete when there is conformity beween the key depressed and thechadless hole or holes sensed and thus a circuit is normally completedto the punch magnet which punches the rectangular holes and columnspaces the card carriage.

If there is a disconformity between the chadless hole in the columnsensed and the key oper ated, a comparing circuit will be completed, thepunch magnet will not energize, no hole is punched, and the cardcarriage does not space, thus indicating an error eitherin the keyoperated or the original chadless hole.

While the present machine, for the purposes of illustration shows themanner of transforming from one type of hole to another type of hole,whether it represents data by a single hole, or data combinational holesin its broader aspects the invention is not limited to this manner oftransformation. For the holes there may be marks, graphical or the like,and a mark may be transformed to a hole, either in the same record, oranother. Various other modifications are within the spirit of theinvention, as defined by the appended claims.

Other objects of the invention will be pointed out in the followingdescription and claims and illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. l is a transverse sectional View of a well known form ofkey-controlled record punching machine in which the present invention ispreferably embodied. In this figure all parts are shown at normal,

Fig. 2 is a side elevational view showing the. interrelation of partswhen a sensingpin has sensed the presence of a chadless type of hole.corresponding to the key depressed, and the position the punch pinoccupies after it has been depressed to completely sever thechadlesshole.

Fig. 3 is a side elevational view showing the position that interrelatedparts occupy when there is a failure to sense a hole in an index pointposition corresponding: to the key operated.

Fig. 4 is a sectional view taken on the line 44 of Fig. 2 showing thearrangement of a plurality of combined sensing-punching pins.

Fig. 5 is a detail sectional view taken on the line 55 of Fig. 4.

Fig. 6 is a view showing a statistical representing record punched withthe chardless form of holes, as well as completely severed holes whichhave been verified as correct.

Fig. 7 is a detail view of an escapement mechanism for spacing therecord column by column.

Fig. 8 is a wiring diagram of the electrical instrumentalities of themachine.

Fig. 9 is an additional wiring diagram showing the control of theinstant verifying punch to permit the verification of alphabetical data.

For the purpose of illustration, one form of the present invention hasbeen shown incorporated in the type of key controlled punching machineshown in the patent to F. L. Lee et al., No. 1,772,186, granted August5, 1930, and the basic machine will be described in only so much detailas is necessary to understand the present invention.

At the outset the card ill to be verified is shown in Fi 6 perforated incolumns 7-19 with unverined chadless holes. There is also shown incolumns 1-6 the transformation of the chadless type i hole to completelysevered rectangular hol s, showing that the chadless holes in suchpositions have been verified and found to be correct.

As is Well known, the card It to be verified is fed from a magazine andrests upon a flat bed surface M (Fig. l) with its rear or trailing edgeengaged by a pivoted pusher l2 and its leading edge engaged by anabutment 3. The cards are fed from the magazine at the right of theapparatus shown in Fig. l to the left and, therefore, to preventinterference or engagement by parts of the apparatus the hinges M of thechads are at the left so that whenever a chad strikes any portion of themachine it will. be merely rocked. Otherwise if the chads are hing-ed ina reverse position the chads might encounter an obstruction so that therecord could not pass freely through the machine. The verifying-punchingstation has, as will be described, a plurality of punching-sensingelements, one for each of the twelve index point positions where theholes are placed, and are spaced corresponding to the index pointpositions of a card column. By escapement means which is well known thecard is stepped column by column past the punching-sensingelements andwhen completely verified the card may either be manually removed fromthe machine or automatically ejected.

Reverting now to the construction of the carriage which carries the cardto be verified and punched, the pusher i2 is carried by a transverselyextending bracket fixed to an escapement rack 55 (Fig. '7) and theabutment i3 is also carried by a similar bracket carried by theescapement rack it. By means of the escapement mechanism which will bedescribed and which is operated for each key depression the escapementrack I5 is moved by the power in a coiled-up spring so as to move stepby step, thus bringing the successive card columns into coordinationwith the combined sensing-punching elements.

The keyboard consists of ten representing keys it and swiveled to thestem ill of each key it: is one arm of a bell crank the other arm ofwhich has a pin and open slot connection iii to an interposer bar 25.Also connected to each bell crank 25] is a spring 25 which returns theinterposer 20 and depressed key it to normal positions. When a key 46 ismanually depressed it rocks the connected bell crank it against theresistance of spring 2! to shift the associated interposer bar 23 to theleft. Each interposer 25 is notched intermediately to provide a verticalshoulder 22 engaged by a common bail 23 fixed to a shaft 25. Movement ofany interposer 29 to the left rocks the bail 23 to close contacts 25, inan obvious manner (see Fig. 3).

One side of bail 23 carries a horizontally extending pin 26 passingthrough a hole in the upper end of a vertical link 21. Link 21 extendsintermediately through an elongated guide hole 28 cut in the frame H;the width of the hole preventing any lateral movement of the link. Thelower end of link 2! is formed with a hook 29 underlying a spring blade39 which carries one of the points of punch contacts 3|.

When any interposer 29 is shifted its shoulder 22 rocks bail 23 to raiselink 21, the hook 29 of which thereupon moves blade 30 upwardly to closepunch contacts 3|. The closure of the contacts 3| energizes the magnet32 to effect, as will be described, a punching operation but only if ithas been ascertained that there is a chadless hole at a positioncorresponding to the depressed key.

Instead of the punching elements which are customarily provided in thebasic machine of the form now being described, there is arranged at eachindex point position combined sensingpunching elements comprising asensing pin 35, and a punch pin 36, which is preferably made of twoparts, as shown in Fig. 5. These two parts are of a form to punch arectangular hole, and are brazed or pinned to the sensing pin 35.

Extending transversely of the machine is cross bar 49 provided withholes to receive the punch and sensing pins 36, 35 and which areretained by a, mounting plate 4|. Thus, cross bar has twelve spacedholes in which are inserted the twelve combined sensing-punchingelements. The sensing pin 35 has a circular head portion 44 lying overthe top of cross bar 49, and also a portion 45 (Fig. 2) extending belowthe lower end of the punching pin 36. The center blade 41 of transfercontacts 48 and 49 normally holds the combined sensing and punchingelements upwardly out of the path of the card Hi, to provideunobstructed movement of the card to sensing position. This, of course,is when each of the interposers 26 is in the normal right-hand position,as shown in Fig. l. The left end of each interposer 26 is provided witha beveled cam edge 59 which, when the interposer 29 is moved to theleft, coacts with the head portion 44 and depresses the sensing pin 35and the punch pin 36 downwardly.

If there should be a chadless hole corresponding to the key depressed atthe initial downward movement of the sensing pin 35 the latter passesthrough the chadless hole, and in so doing the contact 48 opens and thecontacts 49 close, the lower part of the punching pin 36 now being inthe position ready to completely sever the chadless hole since it hasbeen assumed that the key depressed corresponds to the digitrepresentation of the chadless hole.

It is explained that, as is customary, the lower end of each punch pin36 passes through a hole in the stripper plate 52, and a hole in the die53, the card ii], of course, being between plate 52 and die 53.

Each interposer 29, when shifted to the left by either the depression ofa key [6 or other means to be described, causes by means of a stud 55carried by each interposer to close contacts 51 and open contacts 56. Itshould be noted that there is a definite sequence in the operation ofthe various contacts when a key is depressed, and a reversed sequencewhen the key is returned. In order to understand this sequence beforethe description of the machine is given in connection with the wiringdiagramof Fig. 8 the following should be noted: As any key I6 isdepressed its associated contacts 51 are closed and contacts 56 open andits sensing contacts 48, 49 are next operated by means of the downwardmovement of the sensingpin by the interposer bevel 50 acting upon thesensing pin head 44 to thrust the sensing pin downwardly to closecontacts 49 and open contacts 48. The continuing left-hand travel of theinterposer 20 causes the bail 23 to be rocked about pivot 24 to close ata still later time the bail contacts 25. Finally, the elevation of thelink 27 by bail 23 will close the punch contacts 3!.

Referring now to the wiring diagram, it will be seen that for eachsensing pin there is a set of contacts 4948 and for each key there is aset of contacts 56 and 51. The related pair of sensing contacts and keycontacts of the same number are so wired between the line side 69 and awire 96 that the correspondence between a depressed key and a chadlesshole will enable an open circuit to be maintained between the line side66 and the wire 99, effected by the closing of contacts 5'! and contacts49 of a related pair. Assuming now that there is a correspondencebetween a depressed key and a chadless hole, as the key is depressed theassociated contacts 51 will close, but the circuit to EL relay coil isstill open at bail contacts 25. At a later time when the beveled edge 56of the associated interposer 29 depresses the combined sensing pin 45and punch 36 so that the sensing pin penetrates the chadless hole inthat index point position of the card, sensing contacts 49 will close soas to open the circuit between the line side 69 and the wire 99 whichwas previously closed by closure of contacts 51. Thereafter, the bail 23closes bail contacts 25 but due to the open circuit between line side 69and wire 99 no circuit will be completed to line side 6| through therelay coil EL. Since the EL magnet coil is not energized its ELIcontacts will remain closed, enabling a circuit to be completed whenpunch contacts 31 close from the line side 69, through punch contacts3|, ELI contacts, punch magnets 32, to line side 6|.

Referring now to Fig. 1 energization of punch magnets 32 attracts itsarmature 63 and through a link 64 bell crank 65 and link 66, the usualpunch plate 61 pivoted at 68 is rocked. When an interposer 20 is shiftedthe upper edge of the interposer is located beneath the punch plate 61so that the latter strikes the interposer and depresses the punch 36 topush it through the die 53 and thus completely perforate the card at theindex point position where a chadless hole was previously present. Thechadless hole has now been verified and concomitantly transformed to acompletely out hole and herein, rectangular in form so as to controlexisting card controlled machines.

A projection 19 secured to the horizontal link 64 rocks the verticallink 21 to disengage hook 29 from the blade 30 of the punch contacts 3|and the latter thereupon open to deenergize the punch magnets 32. Bymeans of a spring (not shown) which is attached to the link 64 thelinkage and punch plate 6! are returned to their normal positions. Whenthe pressure by the finger which actuated the depressed key is relievedthe key and interposer 26 will return to normal position by the tensionof spring 2! assisted by an interposer spring H which is a very lightspring attached to the interposer 20; At the initial right-hand travelof the interposer 20 the bail 23 will rock clockwise to enable contact.25

to first open, which is followed by the opening of contacts 49' andclosing of contacts 4-8 when the bevel edge 50 moves out of coactionwith the sensing pin head Mi. The resiliency of the contact blade 41opens contacts 49 and closes contacts 48 and also acts to raise thedepressed punch pin 36 and sensing pin 31. If so desired a coil spring(not shown) encircling the punch pin 36 may be compressed when the punchpin is depressed and will function to assist spring contact blade 41 inreturning the depressed punch pin 36 and sensing pin 37. At a stilllater time key contacts 51- open and contacts 56 close. By the operationof the above contacts in a reversed sequence the open circuit to the ELrelay will be maintained when the depressed key is restored.

As is well known the machine is also provided with an escapementmechanism shown in Fig. 7 but which is fully shown and described in thepatent to Schaff, No. 1,426,223 and herein is operated only when it hasbeen found that the chadless hole corresponds to the key depressed. Theescapement mechanism enables the card carriage to move the space of onecolumn to bring the next card column to be verified into coordinationwith the combined punch and sensing elements.

Below all the interposers 20 is a bail l2 mounted on a shaft 13 (seeFigs. 1 and 7). The top of the bail is engaged and rocked by all theinterposers 29. Thus, the depression of any interposer will rock ball 12about its shaft '53. Referring to Fig. '7 one end of ball 72 is providedwith a screw 14 bearing on top of one arm of a lever 75 rotatablymounted on shaft 13. Lever l5 has a pin 1'6 extending loosely through ahole ll in an esoapement pawl 78. The esoapement pawl '58 is looselymounted by means of an elongated slot l8 on shaft 13, in a manner topermit movement of the pawl longitudinally of rack l5. A spring 19acting on lever 15 holds the latter and bail T2 in counterclockwiseposition (Fig. '7). Pawl i8 is maintained in engagement with rack l5 bya spring 88 connected to the pawl.

Lever '15 has a screw 8! bearing on part of a member 82 rotatablycarried by shaft 13 and urged clockwise (Fig. '7) by a spring 83. Member82 has a pin and slot connection 84 with a holding dog 85. When innormal, upper, position ball [2 and lever 15 permit pawl 18 teengagerack I5 and prevent member 82 from moving dog 85 into engagement withthe rack. When the shifted interposer 2 is depressed and rocks bail l2clockwise due to the presence of a hole corresponding to the keydepressed (Fig. 7) lever 15 is thereby rocked in the same direction andmember 82 follows. As a result, pin T6 raises pawl 18 out of engagementwith rack 15 and member 82 lowers dog 85 into engagement with the rack15 before the rack can advance to the right (Fig. 7) When pawl 18 israised its spring 88 moves it to the left to position its nose above thenext rack tooth.

After the punching operation the rocked interposer rises and bail 12 andlever 15 are returnedcounterclockwise (Fig. 7) by spring 19. Pawl 18 isthereupon rocked counterclockwise by spring 80 into the rack tooth abovewhich it had been positioned, while dog 85 is raised by member 82 torelease the rack l for movement to the right by the usual spring motor(not shown). Asthe rack I5 moves to the right Fig. 7, or to the left inFig. 1, it actuates the en gaged pawl 18 in the same direction until thepawl is arrested by engagement of the left side of is slot 18 with shaft13. Thi limits movement of rack I5 to one step for each reciprocation ofbail 12. The step of movement of the rack advances the card a distanceequal to the width of a card column and now the next column is inposition for verification of its chadless hole.

The operation of the machine will now be described when there is adisconformity between the key depressed and the chadless hole, or theabsence of a chadless hole in a column. If a key is depressed which doesnot correspond to the chadless hole in the column being verified thelower portion of the related sensing pin will be over an imperforateindex point position, as shown in Fig. 3. When the associated key isdepressed the related interposer M will be moved to the left to firstclose contacts El and open contacts 56 but the cam edge now coactingwith the sensing pin head 44 will merely cause a slight elevation of theinterposer 2!) at its left end, the connected spring H being a lightspring to enable this movement. Hence, sensing pin 35 cannot be loweredand contacts 48 and 49 will remain in normal position, although contacts51 associated with the depressed key will be closed. Thus, a circuitwill be closed at a later time when bail contacts 25 close from the lineside Bil (Fig. 8), through contacts 48 now in normal position andclosed, thence through contacts 5? now closed, wire 98, bail contacts25, EL relay coil, to line side 5!. EL relay coil opens EL! contacts,which are latched closed by a spring-urged armature latch member 9!.Thus, it will be seen that at a later time when punch contacts 3| closethe punch magnets 32 are not energized and therefore the punch plate Blis not depressed to cause the perforation at the index point positionwhere no chadless hole is present. Since the interposer 28 is not rockeddownwardly to rock escapement operating bail 12 the card carriage willnot space, thus signifying a disconformity. The card in error is nowcompletely withdrawn or ejected from the machine and the operator willnote that since there is a disconformity between the key depressed andthe chadless hole there will still remain the chadles hole in the columnin which a disconformity has been found. The operator can then determinewhether the key depressed was correct or in error or whether a chadlesshole was previously made at an incorrect or correct index pointposition. If it is desired to continue with the verifying operationswithout withdrawal of the card, the reset key 92 is depressed toclosecontacts 93 to energize the ER relay coil by an obvious circuit. The ERrelay coil attracts armature latch 9! to unlatch contacts ELI which goback to normal closed position. In this mode of operation the chadlesshole is easily recognized after verifying the com plete card since it isstill present in a column found to be in disconformity with respect tothe key depressed.

To enhance the value of the machine by enabling verification of bothnumerical and alphabetical data the modification shown in Fig. 9 ispreferably utilized in connection with the selector magnet assemblyincluding magnets 94 (see Fig. l). The interposer operating key stems Hare each swiveled to an actuating member 95 to which is attached anarmature 96 positioned so that it may be attracted by a related selectormagnet 94. Actuating members 95 are pivoted on a rod 81 so thatenergization of a magnet 94 release will cause an interposer 28 .to beoperated in the .same manner as if a key 16 were manually depressed.-

For verifying alphabetic data the selector magnets 94 are wiredcombinationally, as shown in Fig. 9 to contacts 98 operated by keys of akeyboard, which may be, for example, the type shown in Figs. 1 and 12 ofthe patent to O. B. Shafer, No. 2,3l5,741. Such typewriter keyboardwould be mounted in front of the operator for convenient manipulation.The keys are arranged according to the conventional. typewriter keyboardand each of the keys is arranged to close one (numerical) or a pair(alphabetical) of contacts 98 according to a well known statistical coderepresenting numerical data by a single unit code and alphabetical databy a two-unit code.

The record bearing the chadless holes is, of course, perforatedaccording, to this same code and verification is effected in the samemanner previously described, except that for verifying alphabetic datatwo comparing circuits determine the energization of relay coil EL. Forthe verification of alphabetic data apair of sensing contacts 48, 49 areoperated and compared with a pair of presumably associated key contacts56, 57. The closure of either or both comparing circuits indicates thelack of correspondence between the alphabet data designated in a columnof the record and the alphabet key operated to cause the energization ofthe relay coil EL to prevent the punching out of the chadless holes.Retaining both comparing circuits opened indicates a'correspondencebetween the alphabet key operated and-the two chadless holes, which arethen completely punched out.

While there have been shown and described and pointed out thefundamental novel features of the invention, it will be understood thatvarious omissions and substitutions and changes in the form and detailsof the device illustrated and in its operation may be made by thoseskilled in the art without departing from the spirit of the invention.It is the intention, therefore, to be limited only as indicated by thescope of the following claims:

Wat is claimed is:

1. In a machine of the class described, the combination of a cardcarriage carrying a card having designations of one form at index pointpositions in a plurality of columns, column spacing means for saidcarriage, means comprising sensing pins for sensing each column ofdesignations at a time, punching means, selective means comprising aplurality of keys for shifting related sensing pins to determine thepresence of a designation of said one form corresponding to the keyoperated, and means controlled by said sensing pins and said keys toeffect the operation of said punching means to punch a hole at thesensed index point position when it is determined that a senseddesignation corresponds to a key means controlled by said sensing meansand said keys for permitting operation of said punch operating means andthe punching means to effect punching of designations of said other typeonly when the keys operated and the designations of said one type agree.

3. A machine for verifying designations of one type on a record andconverting said designations to punched designations of another type onthe same record, comprising a keyboard including keys all of which arenormally free to be operated, punching means to effect the punching ofdesignations of said other type on a record, punch operating means tooperate the punching means independent of said keys, sensing meanscontrolled by said keys for sensing said one type of designations on thesame record, and means controlled by said sensing means and said keysfor permitting the operation of said punching operating means and thepunching means only when the keys operated and the designations of saidone type agree, and for preventing the op eration of said punchoperating and the punching means when the keys operated and thedesignations of said one type disagree.

4. In a combined card punching and verifying machine, means for sensingeach of the index point positions of a record for determination ofdesignations thereat, punches for overpunching the designations at eachof said index point positions of the same record, a keyboard having keysone for each of saidindex point positions and which keys are normallyfree to be operated to select said punches, punch operating means tooperate said punches independent nation for determination of thepresence of a designation corresponding to the operated key, and'meanscontrolled by saidrelated sensing means and said keys to effect uponsensing a designation corresponding to the operated key the operation ofsaid punch operating means and, an associated punch to over-punch saidsensed designation.

5. In a machine of the class described, means comprising pins forsensing index point positions in a column of a record for statisticalrepresenting designations, keys of a. keyboard, means controlled by eachof said keys to actuate a related sensing pin to determine the presenceof a designation corresponding to the key operated, punching means,means controlled by each of said keys for selecting punching means topunch a card column corresponding to the key operated, means independentof said keys for operating the selected one of said punching means,means responsive to the key operated and related sensing pin when thelatter senses a designation corresponding to the key operated forcausing the operation of the punch operating means and the punchingmeans associated with the key operated, means for inhibiting theoperation of said punch operating means, and means controlled by asensing pin andthe associated key operated when said sensing means failsto sense a designation corresponding to the key operated for causing theoperation of said inhibiting means to prevent operation of the punchoperating means and the punching means associated with the key operated.

6. In a machine of the class described, the combination of a cardcarriage carrying a card having designations of one form at index pointpositions in a plurality of columns, column spacing means for saidcarriage, means comprising sensing pins for sensing each column'ofdesignations at a time, punching means, selective means comprising aplurality of keys for shifting related sensing pins to determine thepresence of a designation of said one form corresponding to the keyoperated, and means controlled by said sensing pins and said keys toeffect the operameans, and the further effective operation of all ofsaid keys when the shifted sensing pin has determined that there is nodesignation corresponding to the key which has shifted said sensing 7.'In a machine of the class described for verifying designations of oneform at index point positions in a plurality of columns, meanscomprising a column of sensing p'insfor sensing each column ofdesignations at 'a time, a plurality of contacts each operated by arelated sensing pin, a plurality of punching means for over-punchingsaid designations, a plurality of keys, means controlled by each of saidkeys for shifting the related sensing pin and closing the related contacts only when a designation is sensed, a plurality of other contacts,means controlled by said keys for closing the associated one of saidother contacts and for selecting the associated punching means,electromagnetic punch operating means, an energizing circuit controlledby each key to energize said electromagnetic punch operating means, anda plurality of comparing circuits controlling said energizing circuit,each of which includes the contacts closed by a sensing pin-and theassociated one of said other contacts closed by the related key topermit the closure of said energizing circuit and the operation of saidelectromagnetic punch operating means to effect the punch operationwhen'the'pinsensing V a designation in a column causes the closure ofassociated contactscorresponding to the contacts closed by the relatedkey.

'8. In a machine of the .class described for verifying designationsofone format index point positions of a column, a column of sensing pinsfor "sensing designations at saidindeX point positions, a plurality ofpunching means for overpunching said designations, .a plurality of keysfor 'shiftingthe related sensing pins to determine whether there isadesignationat an index point position corresponding to the key, and forselecting related punching means, electromagnetic punch operating means,an energizing circuit therefor, -a bail operated by each of said keys,

contacts closed by said bail to complete said energizing circuit, and aplurality of comparing circuits for controlling said energizing circuitand controlled by said sensing pins and said keys, each comparingcircuit inhibiting the completion of said energizing circuit by saidbail operated contacts when a sensing pin .fails to sense adesigna tioncorresponding to the key which shifted said sensing :pin, and forenabling the completion of said energizing circuit by said bail operatedcon- I2 tacts to cause the electromagnetic punch operating means toeffect the punching operation when a sensing pin senses a designationcorresponding to the key which shifted said sensing pin.

9. In a machine of the class described for verifying designations of oneform at index point positions in a plurality of columns, meanscomprising a'column of sensing elements for sensing each column ofdesignations at a time, a plurality of contacts each operated by arelated sensing element, a plurality of punching means, a plurality ofkeys, means controlled by said keys for shifting the related sensingelement and closing the related contacts, a plurality of other contacts,means controlled by said keys for operating the associated one ofsaid-other contacts and for selecting the associated punching :means,electromagnetic punch operating means, :and a plurality of comparingcircuits for controlling said electromagnetic punch operating means,each of which is controlled by the contacts operated'by said sensingelement and by said other contacts operated by the associated "key toenable the operation of saidelectromagnetic punch operating means whenthe pin operated and key operated contacts in the same comparing circuitare simultaneously operated, and to inhibit the operation of theelectromagnetic punch operating means when the key operated contacts areoperated but the pin operated contacts :in the same comparing circuitare unoperated.

10. In a machine of the class described for verifying designations ofone form at index point positions of a column, a column of sensing pinsfor sensing designations at said index point positions, a plurality ofpunching means for over-- punching said designations, a plurality ofkeys for shifting the related sensing pins .to determine whether thereis .a designation ,at an index point position corresponding to the key,and for selecting related punching means, electromagnetic punchoperating means, an energizing circuit therefor, a bail operated by eachof said keys, contacts closed by said bail to complete said energizingcircuit, an error relay adapted when energized to open said energizingcircuit, and a plurality of comparing circuits tor controlling theenergization of said relay and controlled ,by said sensing pins and saidkeys, each comparing circuit enabling the energization of said relay toprevent the completion of saidenergizing circuit by said bail operatedcontacts when a sensing pin fails to sense a designation cor-respondingto the key which shifted said sensing pin, :and for preventing theenergization of said relay andenabling the completion of said energizingcircuit by said bail operated contacts when azsensing pin senses adesignation corresponding to the key which shifted said sensing pin.

CHARLES E. CONNOLLY.

References Cited in the file of this patent UNITED STATES PATENTS NumberName vDate 1,984,516 Brougham Dec. 18, 1934 2,007,391 Bryce July 9,1935$080,192 Youngberg May 11, 1937 2,307,617 .Braun Jan. 5., 19.43

